I think Lexie shot him. Maybe it was her dying present to everyone. One of the stupidest things about this storyline that doesn't make any sense is that EVERYONE and their dog was able to get into the mansion with no problem. No guard, no alarm, etc.... As much money as Stefano has, logic would say, he would at least have protection. He greeted everyone like it was a walk in the park. Also, if each and everyone threatened him, don't you think he would have called up his supposed friends now of the CIA, and tell them that he is being threatened? I just don't buy this whole thing. The writers have completely ruined another character, because just as James Scott and Joseph Mascolo said when they gave Joe an interview, "this is not good at all". EJ to me was ruined a long time ago, but they ruined Sami to the point I can't stand her. They ruined Rafe and Carrie, and Austin. They ruined Stefano. They ruined Gabi. Chad and Melanie are just boring as hell.